US5394717A - Security lock - Google Patents

Security lock Download PDF

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Publication number
US5394717A
US5394717A US08/079,945 US7994593A US5394717A US 5394717 A US5394717 A US 5394717A US 7994593 A US7994593 A US 7994593A US 5394717 A US5394717 A US 5394717A
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United States
Prior art keywords
primary
links
actuator
link
moveable
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
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US08/079,945
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English (en)
Inventor
Sandy T. S. Yu
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Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to US08/079,945 priority Critical patent/US5394717A/en
Priority to CA 2104352 priority patent/CA2104352A1/fr
Priority to PCT/CA1993/000371 priority patent/WO1994005962A1/fr
Application granted granted Critical
Publication of US5394717A publication Critical patent/US5394717A/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
    • F41A17/00—Safety arrangements, e.g. safeties
    • F41A17/06—Electric or electromechanical safeties
    • F41A17/063—Electric or electromechanical safeties comprising a transponder
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
    • E05B47/0038—Operating or controlling locks or other fastening devices by electric or magnetic means using permanent magnets
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
    • F41A17/00—Safety arrangements, e.g. safeties
    • F41A17/06—Electric or electromechanical safeties
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S292/00—Closure fasteners
    • Y10S292/27—Disconnectable handle
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T292/00—Closure fasteners
    • Y10T292/11—Magnetic
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T70/00—Locks
    • Y10T70/50—Special application
    • Y10T70/5093—For closures
    • Y10T70/5155—Door
    • Y10T70/5199—Swinging door
    • Y10T70/5372—Locking latch bolts, biased
    • Y10T70/5385—Spring projected
    • Y10T70/5389—Manually operable
    • Y10T70/5394—Directly acting dog for exterior, manual, bolt manipulator
    • Y10T70/5416—Exterior manipulator declutched from bolt when dogged
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T70/00—Locks
    • Y10T70/70—Operating mechanism
    • Y10T70/7051—Using a powered device [e.g., motor]
    • Y10T70/7057—Permanent magnet

Definitions

  • This invention relates to locks and the like, with particular application to a safety lock for a gun and has other applications for controlling the locking and unlocking of a briefcase or drawer, for example.
  • a conventional key lock is, however, not practical for controlling the operation of a gun because a two step procedure would be required to operate the gun; first, the key must be turned to deactivate a locking mechanism and secondly the trigger of the gun must be pulled in order to fire a projectile. This, of course, would not be practical in cases where the gun is in the hands of a policeman, as for this application the gun must be ready at all times.
  • each of these references discloses a weapon locking device employing a magnetic ring worn by a user of the device and a magnetically responsive member inside the weapon which is moved into or out of an interfering relationship with a working part of the weapon by the magnetic influence of the ring worn by the user.
  • a devious user could, however, activate the mechanism simply by lashing a magnet in the vicinity of the magnetically responsive member thereby permanently enabling the gun to be fired.
  • an apparatus for controlling a primary actuator comprising a primary moveable link connected to said primary actuator, a secondary actuator, a secondary moveable link connected to said secondary actuator, the secondary moveable link being engageable and disengageable with the primary moveable link, guiding means for guiding the movement of said primary and secondary links along a pre-defined path, controlling means for controlling the engagement and disengagement of the primary and secondary links whereby movement of said secondary actuator is transferred to said primary actuator when said links are engaged and movement of said secondary actuator is not transferred to said primary actuator when said links are disengaged.
  • the apparatus includes a first magnet on the secondary moveable link and a cooperating magnet secured to a ring worn on a finger of a user of the apparatus.
  • the secondary actuator and the primary and secondary links are positioned on the apparatus such that the user can simultaneously position the first cooperating magnet adjacent the second moveable link and actuate the secondary actuator, all using only one hand.
  • the apparatus includes an intermediate moveable link disposed between the primary and secondary moveable links and guided by the guiding means.
  • the intermediate moveable link has an intermediate moveable portion which is guided in movement perpendicular to a movement plane.
  • the intermediate moveable link has first and second opposite end portions, the first end portion having an intermediate opening therein and the second end portion having an intermediate projection, the intermediate opening being operable to receive a primary projection extending from the primary link and the intermediate projecting being operable to be received in a secondary opening in the secondary moveable link.
  • the intermediate moveable link has a second magnet connected thereto, the second magnet having a polarity opposite to the polarity of the first magnet connected to the secondary moveable link.
  • the controlling means includes first and second cooperating magnets on first and second rings worn on first and second fingers on the hand of a user of the apparatus.
  • the first and second cooperating magnets have opposite polarity such that each attracts its respective corresponding magnet on said links when the user places the first and second rings adjacent the secondary and intermediate links respectively.
  • a method for controlling a primary actuator comprising the steps of:
  • an apparatus for controlling a primary actuator comprising a primary moveable link connected to the primary actuator, a secondary actuator, a secondary moveable link connected to the secondary actuator, a plurality of moveable links selectively engageable with each other and with said primary and secondary moveable links; guiding means for guiding the movement of the primary and secondary links and the plurality of links, along a predefined path; controlling means for controlling the engagement and disengagement of the plurality of moveable links with each other and with the primary and secondary links, whereby movement of the secondary actuator is transferred to the primary actuator when at least some of the links are engaged and movement of the secondary actuator is not transferred to said primary actuator when said some of said links are disengaged.
  • a gun comprising:
  • a trigger bar having first and second end portions, the first end portion being operable to engage said sear and the second end portion being connected to the trigger;
  • safety means for controlling the primary actuator including:
  • a secondary actuator having a portion extending outwardly from the handle portion
  • guiding means for guiding the movement of said primary and secondary links along a pre-defined path, whereby the primary and secondary links may be selectively engaged and disengaged such that when the links are engaged, actuation of the secondary actuator causes the first end portion of the trigger bar to engage the sear and when the links are disengaged, actuation of the secondary actuator has no effect on the engagement of the first end portion with the sear.
  • the apparatus further includes controlling means for controlling the engagement and disengagement of the primary and secondary links whereby movement of said secondary actuator is transferred to said primary actuator when said links are engaged and movement of said secondary actuator is not transferred to said primary actuator when said links are disengaged.
  • the apparatus includes feedback means for providing feedback to an operator of the firearm, indicative of the state of readiness of the firearm.
  • the method includes the step of placing on the operator's first and second fingers first and second rings carrying first and second cooperating magnets having opposite polarity.
  • the method includes the step of sensing the movement of the primary actuator with a portion of the operator's body normally in contact with the firearm during normal use thereof.
  • Devices according to the present invention are easily and conveniently fitted into handle portions of conventional firearms and therefore such devices are easily retrofittable.
  • FIG. 1 is a perspective view of an apparatus for controlling a primary actuator according to a first embodiment of the invention
  • FIG. 2 is a side view of the apparatus of FIG. 1;
  • FIG. 3 is a side view of the apparatus of FIG. 1 shown in an energized position whereby links according the apparatus are coupled together;
  • FIG. 4 is a simplified perspective view of a link assembly according to the invention, illustrating movement of the links into an actuated position
  • FIG. 5 is a simplified perspective view of the link assembly shown in a de-energised, unactuated, home position
  • FIG. 6 is a side view of a gun having an apparatus as described with respect to the first embodiment installed therein for controlling the engagement of a trigger bar with a sear of said gun;
  • FIG. 7 is a cross sectional view of an indicator according to the invention, for indicating to a user of the gun of FIG. 6, the condition that the gun is ready for operation;
  • FIG. 8 is a perspective view of a link assembly according to a second embodiment of the invention with links according to said second embodiment shown in a de-energized, uncoupled, home position;
  • FIG. 9 is a perspective view of the apparatus of FIG. 8 shown in an energized, coupled, actuated position
  • FIG. 10 is a perspective view of an apparatus according to a third embodiment of the invention, links of the apparatus being shown in a home position;
  • FIG. 11 is a perspective view of the apparatus of FIG. 10 wherein links of the apparatus are shown in a disengaged position.
  • FIG. 1 A first figure.
  • an apparatus for controlling a primary actuator 10 is shown generally at 12. It will be apparent that the primary actuator 10 may be any mechanism for moving or controlling something indirectly instead of by hand. Examples of primary actuators contemplated by the inventor include a spring loaded trigger bar of a gun, a spring loaded lock on a briefcase, and a spring loaded lock on a drawer. The invention will be described in an application where the primary actuator is a spring loaded trigger bar of a gun, but it will be appreciated that the invention is easily adaptable to the applications listed above and to applications generally involving the actuation of an actuator.
  • the apparatus 12 includes first and second spaced apart mounting plates 14 and 16 respectively, the plates being spaced apart by standoffs 18.
  • a secondary actuator shown generally at 20 Disposed between the first and second mounting plates 14 and 16 is a secondary actuator shown generally at 20, the secondary actuator being pivotally connected to the first plate 14 by a pivotal connection 22 and the secondary actuator 20 having a first end portion 24 and a second end portion 26 disposed on opposite sides of the pivotal connection 22.
  • the first end portion 24 projects outwardly from the first and second plates 14 and 16 and is operable to be pushed in the direction of arrow 28 to rotate the secondary actuator 20 about the pivotal connection 22 thereby causing corresponding movement of the second end portion in the direction of arrow 30.
  • the link assembly includes an channel member shown generally at 34, the channel member having first and second spaced apart upstanding wall portions 36 and 38 respectively, connected by a plate portion 40.
  • the link assembly includes a primary moveable link shown generally at 42, a secondary moveable link shown generally at 44 and an intermediate moveable link shown generally at 46.
  • the primary moveable link 42 has a main portion shown generally at 43 and a cooperating portion shown generally at 50.
  • the main portion has an outer end portion 48 to which is connected a hook 52.
  • a primary flexible tension link 54 is connected between the hook 52 and an end portion 56 of the primary actuator 10.
  • Further connected to the main portion is a second hook 58, for cooperating with a primary elastic member 60 having a first end portion 62 connected to the first upstanding wall portion 36, a second end portion 64 connected to the second upstanding wall portion 38 and an intermediate portion 65 directly connected to the second hook 58.
  • the cooperating portion 50 has an upstanding wall portion 66 which extends vertically upwards at right angles relative to the main portion 43. Connected to the upstanding wall portion is a top portion 68 extending in a plane parallel to the plane of the main portion 43 and connected to the top portion is a primary projection 70 extending downwards, parallel to the upstanding wall portion 66.
  • the first and second upstanding wall portions 36 and 38, immediately adjacent the upstanding wall portion 66 are formed with respective primary transverse channel tabs 190 which interfere with the main portion 43 to prevent the primary link 42 from lifting out of the channel member 34 during movement.
  • the secondary moveable link 44 has a main portion 72 having first and second opposite end portions 74 and 76.
  • the first end portion 74 has a transversely extending secondary opening 78 extending therethrough and the second end portion 76 has first and second upstanding tabs, only one of which is shown at 77, and has a hook 80 to which is connected a secondary flexible tension link 82.
  • the secondary flexible tension link 82 is routed past a pulley 84 secured to the plate portion 40 of the channel member 34, and is further connected to the second end portion 26 of the secondary actuator 20.
  • the secondary moveable link has a first magnet 86 connected thereto, the first magnet having a North pole facing in a vertically upward direction relative to the main portion 72.
  • a secondary resilient elastic member 88 has a first end portion 90 connected to the first upstanding wall portion 36, has a second end portion 92 connected to the second upstanding wall portion 38 and has an intermediate portion 94 extending around a portion of the first magnet 86.
  • the first and second upstanding wall portions 36 and immediately adjacent the second end portion 76 are formed with respective secondary transverse channel tabs 192 which interfere with the main portion 72 and with the upstanding tabs 77, to prevent the secondary link 44 from lifting out of the channel member 34 during movement of the link and to limit the travel of the link. While the secondary transverse channel tabs 192 perform these functions, they permit sufficient rotational movement of the first end portion 74 relative to the second end portion 76 to allow the secondary link 44 to engage with the intermediate link 46 as will be appreciated below.
  • the first end portion 74 therefore acts as a secondary moveable portion of the secondary link.
  • the intermediate moveable link 46 also has a main portion 96 having a first end portion 98 with a transversely extending intermediate opening 100 disposed therein, and has a second end portion 99.
  • the intermediate moveable link also has an intermediate cooperating portion 102 having an upstanding wall portion 104, a top portion 106 and an intermediate projection 108.
  • a second magnet 110 having a South pole, facing upwardly relative to the main portion 96.
  • the intermediate moveable link further includes an intermediate resilient elastic member 112 having a first end portion 114 connected to the first upstanding wall portion 36, a second end portion 116 connected to the second upstanding wall portion 38 and an intermediate portion 118 extending around a portion of the second magnet 110.
  • the first and second upstanding wall portions 36 and 38, immediately adjacent the second end portion 116 are formed with respective intermediate transverse channel tabs 194 which interfere with the main portion 96 and with the upstanding wall portion 104, to prevent the intermediate link 46 from lifting out of the channel member 34 during movement of the link and to limit the travel of the link. While the intermediate transverse channel tabs 194 perform these functions, they permit sufficient rotational movement of the first end portion 98 relative to the second end portion 99 to allow the intermediate link to engage with the primary link as will be appreciated below. The first end portion 98 therefore acts as an intermediate moveable portion of the intermediate link.
  • the apparatus 12 is shown in a vertical position with the primary, secondary and intermediate links 42, 44 and 46 respectively, in respective home positions.
  • the apparatus is secured to an object 113 containing ferrous metal, with the ferrous metal being beneath the plate portion 40 of the channel member 34, such that the first and second magnets tend to be forced against the plate portion 40. This keeps the links out of engagement when in the home position shown in FIG. 2.
  • a hand of a user is shown in broken outline at 119, the hand having first and second fingers 120 and 122.
  • the user wears a ring 124 having a first cooperating magnet 126 secured thereto such that the South pole faces radially outwardly, away from the finger 120 and the North pole of the magnet faces radially inwardly toward the finger 120.
  • the user wears a second ring 128 having a second cooperating magnet 130 secured thereto, the second magnet having a North pole facing radially outwardly and a South pole facing radially inwardly relative to the finger 122.
  • the first magnet 86 and the first cooperating magnet 126 have opposite polarity.
  • the secondary actuator 20 and the secondary and intermediate links 44 and 46 are positioned on the apparatus such that the user can simultaneously position the first and second cooperating magnets 126 and 130 adjacent the second and intermediate moveable portions respectively and actuate the second actuator, all using only one hand. It should be apparent that the secondary actuator 20 is actuated by squeezing pressure applied by the hand of the user.
  • first and second cooperating magnets 126 and 130 present to the secondary and intermediate links, respective first and second magnetic fields 132 and 134 which pass through the second plate 16 to cause attraction of the first and second magnets 86 and 110 respectively.
  • the rotation of the secondary link 44 is sufficient to cause the first end portion 74 to rotate towards the second plate 16 whereby the intermediate projection 108 is received in the secondary opening 78.
  • the first end portion 98 of the intermediate link is rotated toward the second plate 16 such that the primary projection 70 is received in the intermediate opening 100.
  • the first and second cooperating magnets 126 and 130 therefore act as controlling means for controlling the engagement and disengagement of the primary, secondary, and intermediate links.
  • the primary, secondary and intermediate links are shown coupled together with the secondary flexible tension link 82 at a limit of travel and with the primary flexible tension link 54 shown pulled downwards such that the primary actuator 10 is moved from the home position shown in broken outline to the position shown in solid outline.
  • the elastic members 60, 88 and 112 are stretched due to movement of the links, such that the primary, secondary and intermediate links are biased back into the home position as shown in FIG. 1.
  • the secondary actuator 20 is released, the primary, secondary and intermediate links are returned to the home position as shown in FIG. 1, by the elastic members 60, 88 and 112.
  • These elastic members therefore act as biasing means for biasing the primary, secondary, and intermediate links into the home position.
  • the primary, secondary and intermediate transversely extending channel tabs 191, 192 and 194 are spaced apart from the plate portion 41 such that the links can move linearly along the channel without becoming disengaged by the camming action of the channel tabs on respective main portions 43, 72 and 96 as the links are moved.
  • Releasing the secondary actuator 20 releases the tension on the secondary flexible tension link 82 and permits the secondary moveable link 44 to move in a direction opposite to arrow 142 under the influence of elastic member 88 until the upstanding tabs 77 interfere with the secondary channel tabs 192, whereupon the secondary link is considered to be in the home position.
  • a gun employing a variation of the apparatus shown in FIGS. 1-5 is shown generally at 150.
  • the gun includes a body 152 having a barrel portion 154, a handle portion 156, a grip panel 195 and a firing mechanism shown generally at 158.
  • the firing mechanism includes a trigger 160, a trigger bar 162, a sear 164 a hammer 167 a spring 169 and a leaf spring 166.
  • the gun is manufactured with the spring 169 installed to act in compression which serves to hold the trigger bar 162 into engagement with the sear 164.
  • the spring 169 is used in extension to bias the trigger bar 162 in the direction of arrow 171, out of engagement with the sear 114.
  • the leaf spring 166 is added to the gun as manufactured and is secured thereto by a pivot pin 173. Rotation of the leaf spring about the pivot pin causes the leaf spring to push the trigger bar 162 upwards, against the resisting force of the spring 169 and into engagement with the sear 164.
  • the leaf spring 166 assumes the role of the primary actuator 10 referred to in the figures above.
  • the apparatus described in connection with FIGS. 1-5 has been modified such that the actuator is on an opposite side of the channel member. Otherwise, the components and operation of the apparatus are the same as described in FIGS. 1-5. Therefore, the same terms and numerical reference numbers will be used to describe components corresponding to components described in FIGS. 1-5.
  • the channel member 34 is mounted in a hollow portion 168 between the handle portion 156 and the grip panel 195 such that it extends generally longitudinally thereof, near a forward edge 157 of the handle such that the cooperating magnets 126 and 130 worn on the fingers 120 and 122 of an operator will be positioned as close as possible to the first and second magnets 86 and 110 on the second and intermediate links 44 and 46 respectively when the operator grips the handle.
  • the operator's index finger 121 (seen best in FIG. 3) is intended to operate the trigger while the first and second rings are intended to be worn on the fourth and middle fingers respectively, of the same hand.
  • the secondary actuator 20 is also secured to the hollow portion of the handle portion 156 such that the first end portion 24 projects outwardly therefrom and such that it is operable to be contacted by the area between an operator's forefinger and thumb when the handle portion is gripped, while the fourth and middle fingers place the first and second cooperating magnets in the above described positions adjacent the secondary and intermediate links.
  • the leaf spring 166 is connected to the primary link 42 by the primary flexible tension link 54 and the secondary actuator 20 is connected to the secondary link by the secondary flexible tension link 82.
  • movement of the secondary actuator 20 is transferred to the leaf spring 166 which is pushed against the trigger bar 162 to engage the trigger bar with the sear 164, thereby enabling the gun 150 to be fired upon pulling the trigger 160.
  • Operation of the gun 150 is achieved by placing the first and second rings (not shown in FIG. 6, see FIG. 3) carrying the first and second cooperating magnets respectively, on first and second fingers 120 and 122 respectively of a hand of an operator.
  • the operator grips the handle portion 156 such that the operator's index finger is received adjacent the trigger 160 while the fourth and middle fingers place the first and second rings and hence, the first and second cooperating magnets adjacent the secondary and intermediate links 44 and 46 respectively.
  • the first and second cooperating magnets have south and north polarities respectively
  • the first and second magnets 86 and 110 on the secondary and intermediate links respectively have north and south polarities respectively.
  • the user squeezes his hand about the handle portion 156 to move the secondary actuator 20, whereby movement of the secondary actuator 20 is transferred to the leaf spring 166 by the primary, secondary and intermediate links 42, 44 and 46, thereby engaging the trigger bar 162 with the sear 164.
  • the gun 151 is thus readied for use and upon pulling the trigger 160, the gun is fired in the conventional manner.
  • an indicator for indicating to the operator that the gun is ready for firing may be provided by attaching a horizontally moving wedge member 161 to the primary flexible tension link 54, providing an opening 163 in the grip panel 195 and providing a vertically moving wedge member 155 in the opening 163 and resting on the horizontally moving wedge member 161.
  • the primary flexible tension link is moved in the directions indicated by arrow 153, the horizontally moving wedge member 161 moves between the positions shown in broken and solid outline.
  • the vertically moving wedge member 155 is restricted in horizontal movement by the opening 163 and therefore moves vertically upwards, due to the movement of the horizontally moving wedge member, such that a portion 151 extends out of the opening 163.
  • this portion 151 may be felt by the forefinger of the user.
  • the operator can feel the wedge member 155 move in the opening 163 thereby receiving feedback that the gun is ready to fire.
  • the wedge member 155 and associated apparatus therefore act as feedback means for providing feedback to an operator of the apparatus indicative of the state of readiness of the firearm, the feedback means including an indicating member, the wedge member, connected to the flexible tension link, the member having a portion protruding from the firearm in an area contacted by the operator when using the firearm, such that the operator can feel the movement of the indicating member.
  • FIGS. 8 and 9 an apparatus according to a second embodiment of the invention is shown generally at 170.
  • This apparatus is generally the same as the apparatus as shown in FIG. 1-5, with the exception that the intermediate link has been omitted and therefore the apparatus includes a primary link 172 and a secondary link 174, the primary and secondary links being engageable by receiving a primary projection 176, extending from the primary link, in a secondary opening 178 in the secondary link.
  • the secondary link has a first magnet 180 secured thereto, the secondary link being attracted to a first cooperating magnet as described in connection with FIG. 3, when a first ring to which the first cooperating magnet is secured, is brought into close proximity to the secondary link 174.
  • the polarities of the first magnet 180 and the first cooperating magnet are north and south respectively such that attraction occurs between them.
  • the secondary link When the operator places a finger on which the first ring is worn adjacent the secondary link 174, the secondary link is moved relative to the primary link 172 such that the primary projection 176 is received in the secondary opening 178, whereby the primary and secondary links are engaged.
  • the primary link 172 is connected to a first flexible tension link 182 which may be connected to an actuator as shown in FIG. 1 and the secondary link 174 is connected to a secondary flexible tension link 184 which may be connected to a secondary actuator 20 as shown in FIG. 1.
  • tension in the secondary flexible tension link as imposed by a secondary actuator 20, causes the primary and secondary links to be moved, thereby transferring such movement to the primary flexible tension link and hence to a primary actuator connected to the primary flexible tension link.
  • FIG. 8 shows the primary and secondary links in a home position, the secondary link being biased into this home position by an elastic member 186.
  • the elastic member 186 is stretched and thus imposes a biasing force tending to return the secondary link 174 and hence also the primary link 172, to the home position shown in FIG. 8.
  • the apparatus described in connection with FIGS. 8 and 9 relies on simple attraction of a single link to effect engagement of the primary and secondary links whereas the apparatus described in connection with FIGS. 1-5 relies on attraction of two links which can only be achieved when the operator wears rings of a pre-defined polarity combination to match the polarity of magnets on the secondary and intermediate links respectively.
  • an apparatus according to a third embodiment of the invention is shown generally at 200.
  • the apparatus 200 is generally the same as the apparatus shown in FIGS. 1-5 with the exception that the intermediate link 46 has an upwardly extending projection 202 which is received in the secondary opening 78 when the links are in the home position, the intermediate link has upstanding tabs 196 and, the secondary link 44 has a first magnet 86 having an upwardly facing North pole while the intermediate link has a second magnet 10 having an upwardly facing South pole.
  • This embodiment has advantages in applications where there is little ferrous material underneath the channel member 34 to cause the first and second magnets 86 and 110 to be attracted flat against the channel plate portion 40 as is normally required to keep the links out of engagement in the home position.
  • the primary and intermediate links 42 and 46 are out of engagement while the secondary and intermediate links 44 and 46 are in engagement.
  • the primary and intermediate links 42 and 46 will become engaged while the secondary and intermediate links 44 and 46 are likely to become disengaged as shown.
  • the only way to cause all of the links to become engaged at the same time is for the user to grasp the apparatus with a hand wearing a ring having a first cooperating magnet with an outwardly facing North pole while at the same time wearing a second ring having a second cooperating magnet also with an outwardly facing North pole.
  • the magnet on the first ring will repel the first magnet 86, tending to keep the secondary and intermediate links 44 and 46 in engagement.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Manipulator (AREA)
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US08/079,945 1992-09-09 1993-06-23 Security lock Expired - Fee Related US5394717A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US08/079,945 US5394717A (en) 1992-09-09 1993-06-23 Security lock
CA 2104352 CA2104352A1 (fr) 1992-09-09 1993-08-18 Verrou de securite
PCT/CA1993/000371 WO1994005962A1 (fr) 1992-09-09 1993-09-08 Cran de securite

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US94163992A 1992-09-09 1992-09-09
US08/079,945 US5394717A (en) 1992-09-09 1993-06-23 Security lock

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Application Number Title Priority Date Filing Date
US94163992A Continuation-In-Part 1992-09-09 1992-09-09

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US5394717A true US5394717A (en) 1995-03-07

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Application Number Title Priority Date Filing Date
US08/079,945 Expired - Fee Related US5394717A (en) 1992-09-09 1993-06-23 Security lock

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US (1) US5394717A (fr)
CA (1) CA2104352A1 (fr)
WO (1) WO1994005962A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0825408A2 (fr) * 1996-08-23 1998-02-25 Daniel Hirschi Dispositif empêchant l'utilisation non-autorisée d'un article
US5758524A (en) * 1996-03-22 1998-06-02 Yu; Sandy Tai Sheung Handle-mounted locking apparatus and method
US5884515A (en) * 1997-09-24 1999-03-23 Ilco Unican Corp. Electromagnetic clutch for electronic locks
US6408555B1 (en) * 2000-09-07 2002-06-25 Franco Sapia Electronic trigger lock apparatus and system
US9816779B2 (en) 2013-10-23 2017-11-14 Saeilo Enterprises, Inc. Smart holster system
US20180259280A1 (en) * 2017-03-09 2018-09-13 Roy Martin Biometric Firearms Safety System

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US3857262A (en) * 1973-02-08 1974-12-31 K Sidiropoulos Magnetic locking mechanism
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US3967479A (en) * 1974-06-25 1976-07-06 Jerome Vick Key lock
US4067132A (en) * 1974-12-09 1978-01-10 Smith Joseph E Safety device for preventing the unauthorized firing of a weapon
US3974669A (en) * 1975-08-25 1976-08-17 American Locker Company, Inc. Lock
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US4354189A (en) * 1977-11-09 1982-10-12 Lemelson Jerome H Switch and lock activating system and method
US4307589A (en) * 1978-01-13 1981-12-29 Tomomasa Kajita Magnetic lock construction
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US4416127A (en) * 1980-06-09 1983-11-22 Gomez Olea Naveda Mariano Magneto-electronic locks
US4457091A (en) * 1982-04-14 1984-07-03 Wallerstein Robert S Firearm safety lock
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US5192818A (en) * 1984-03-15 1993-03-09 Martin John M Means for reducing the criminal usefulness of hand weapons
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US5016376A (en) * 1989-10-20 1991-05-21 Pugh Kenneth J Magnetic actuated firearms locking mechanism
US5123193A (en) * 1989-10-20 1992-06-23 Pugh Kenneth J Magnetic actuated firearms locking mechanism for shoulder mountable weapons
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US5758524A (en) * 1996-03-22 1998-06-02 Yu; Sandy Tai Sheung Handle-mounted locking apparatus and method
EP0825408A2 (fr) * 1996-08-23 1998-02-25 Daniel Hirschi Dispositif empêchant l'utilisation non-autorisée d'un article
EP0825408A3 (fr) * 1996-08-23 2000-06-07 Daniel Hirschi Dispositif empêchant l'utilisation non-autorisée d'un article
US5884515A (en) * 1997-09-24 1999-03-23 Ilco Unican Corp. Electromagnetic clutch for electronic locks
US6408555B1 (en) * 2000-09-07 2002-06-25 Franco Sapia Electronic trigger lock apparatus and system
US9816779B2 (en) 2013-10-23 2017-11-14 Saeilo Enterprises, Inc. Smart holster system
US20180259280A1 (en) * 2017-03-09 2018-09-13 Roy Martin Biometric Firearms Safety System
US10126080B2 (en) * 2017-03-09 2018-11-13 Roy Martin Biometric firearms safety system

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CA2104352A1 (fr) 1994-03-10

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